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香港大沙叶Pavetta hongkongensis

时间:2013-11-08 12:33来源:未知 作者:徐晔春 点击:
中文名( Chinese Name ):香港大沙叶 学名( Scientific Name ): Pavetta hongkongensis Bremek. 英文名( English Common Name ): 别名( Chinese Common Name ): 茜木 异名( Synonym ): Tarenna kwangsiensis Hand.-Mazz. 科属( Family Genus
中文名(Chinese Name):香港大沙叶
学名(Scientific Name):Pavetta hongkongensis Bremek.
英文名(English Common Name):
别名(Chinese Common Name):茜木
异名(Synonym):Tarenna kwangsiensis Hand.-Mazz.
科属(Family & Genus):茜草科(Rubiaceae)大沙叶属
形态特征(Description):灌木或小乔木,高1-4米;叶对生,膜质,长圆形至椭圆状倒卵形,长8-15厘米,宽3-6.5厘米,顶端渐尖,基部楔形,上面无毛,下面近无毛或沿中脉上和脉腋内被短柔毛;侧脉每边约7条,在叶片上面平坦,在下面凸起;叶柄长1-2厘米;托叶阔卵状三角形,长约3毫米,外面无毛,里面有白色长毛,顶端急尖。花序生于侧枝顶部,多花,长7-9厘米,直径7-15厘米;花具梗,梗长3-6毫米;萼管钟形,长约1毫米,萼檐扩大,在顶部不明显的4裂,裂片三角形;花冠白色,冠管长约15毫米或长些,外面无毛,里面基部被疏柔毛;花丝极短,花药突出,线形,长约4毫米,花开时部分旋扭;花柱长约35毫米,柱头棒形,全缘。果球形,直径约6毫米。花期3-4月。
分布(Distribution):产华南、云南等省区,生于海拔200-1300米的灌木丛中。越南也有。
用途(Use):全株入药,有清热解毒、活血去瘀之效,又能治感冒发热、中暑、肝炎、跌打刀伤。本种的叶表面有固氮菌所形成的菌瘤,满布叶上呈点状,故民间称“满天星”。
引自中国植物志英文版:FOC Vol. 19 Page 287, 288   
Pavetta hongkongensis Bremekamp, Repert. Spec. Nov. Regni Veg. 37: 104. 1934.
香港大沙叶 xiang gang da sha ye| Rubiaceae  | Pavetta
Tarenna kwangsiensis Handel-Mazzetti.
Shrubs or small trees, 1-4 m tall; branches compressed, glabrous, green or almost green, often drying blackened. Petiole 1-2 cm, glabrous; leaf blade drying membranous, elliptic-oblong to elliptic-oblanceolate, 8-15 × 3-6.5 cm, often with bacterial nodules, adaxially glabrous, abaxially glabrous, glabrescent, or pubescent along midrib, base cuneate to acute, apex acuminate to acute; secondary veins 6 or 7 pairs; stipules broadly ovate-triangular, 1-3 mm, glabrous, acute to shortly aristate. Inflorescences terminal on lateral branches, laxly corymbose, 7-9 × 7-15 cm, many flowered, glabrous; peduncle 1-2 cm; pedicels 3-6 mm. Flowers pedicellate. Calyx with hypanthium portion ellipsoid, ca. 1 mm, glabrous; limb 0.5-1.5 mm, glabrous, shallowly lobed. Corolla white, outside glabrous; tube 12-19 mm, inside pilose at throat; lobes narrowly triangular-oblong, 5-7 mm, acute to obtuse. Style ca. 35 mm. Drupes globose, 6-7 mm, pilosulous to glabrous, calyx limb persistent. Fl. Mar-Jul, fr. Jul-Nov.
Thickets; 200-1300 m. Guangdong, Guangxi, Hainan, Yunnan [Vietnam].
Bremekamp noted in his description of this species that it comprises the Chinese plants previously treated as Pavetta indica by at least some authors.
 


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